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Malachite
Malachite from the Democratic Republic of the Congo
General
Category
Carbonate mineral
Formula (repeating unit)
Cu2CO3(OH)2
IMA symbol
Mlc[1]
Strunz classification
5.BA.10
Crystal system
Monoclinic
Crystal class
Prismatic (2/m) (same H-M symbol)
Space group
P21/a
Identification
Formula mass
221.1 g/mol
Color
Bright green, dark green, blackish green, with crystals deeper shades of green, even very dark to nearly black commonly banded in masses; green to yellowish green in transmitted light
Crystal habit
Massive, botryoidal, stalactitic, crystals are acicular to tabular prismatic
Twinning
Common as contact or penetration twins on {100} and {201}. Polysynthetic twinning also present.
Cleavage
Perfect on {201} fair on {010}
Fracture
Subconchoidal to uneven
Mohs scale hardness
3.5–4
Luster
Adamantine to vitreous; silky if fibrous; dull to earthy if massive
Streak
light green
Diaphaneity
Translucent to opaque
Specific gravity
3.6–4
Optical properties
Biaxial (–)
Refractive index
nα = 1.655 nβ = 1.875 nγ = 1.909
Birefringence
δ = 0.254
References
[2][3][4][5]
Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green-banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and deep, underground spaces, where the water table and hydrothermal fluids provide the means for chemical precipitation. Individual crystals are rare, but occur as slender to acicular prisms. Pseudomorphs after more tabular or blocky azurite crystals also occur.[5]
^Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C., eds. (2003). "Malachite" (PDF). Handbook of Mineralogy. Vol. V (Borates, Carbonates, Sulfates). Chantilly, Virginia: Mineralogical Society of America. ISBN 0962209740.
Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green-banded mineral crystallizes in the monoclinic crystal...
Malachite green is an organic compound that is used as a dyestuff and controversially as an antimicrobial in aquaculture. Malachite green is traditionally...
The malachite kingfisher (Corythornis cristatus) is a river kingfisher which is widely distributed in Africa south of the Sahara. It is largely resident...
common basic copper(II) carbonate minerals, the other being bright green malachite. Aurichalcite is a rare basic carbonate of copper and zinc. Simple copper...
(Russian: Хозяйка медной горы, tr. Hozjajka mednoj gory), also known as The Malachite Maid, is a legendary being from Slavic mythology and a Russian fairy tale...
and absorb the others. Important green pigments in art history include Malachite and Verdigris, found in tomb paintings in Ancient Egypt, and the Green...
English was in 1892. Malachite, also called malachite green, is a color that is a representation of the color of the mineral malachite. The first recorded...
Malachite Peak is a 6,261-foot (1,908-metre) mountain summit located 5.5 mi (8.9 km) south of Skykomish, in eastern King County of Washington state. It's...
The malachite sunbird (Nectarinia famosa) is a small nectarivorous bird found from the highlands of Ethiopia southwards to South Africa. They pollinate...
The Moab Man (also called "Malachite man") is a find of several human skeletons found after bulldozing in a mine whose rock dated to the Early Cretaceous...
submarine Malachite was a Perla-class submarine built for the Royal Italian Navy (Regia Marina) during the 1930s. She was named after a gemstone Malachite. The...
The Malachite Box or The Malachite Casket (Russian: Малахитовая шкатулка, tr. Malakhitovaya Shkatulka, IPA: [məlɐˈxʲitəvəjə ʂkɐˈtulkə]) is a book of fairy...
Malachius aeneus, the scarlet malachite beetle, is a species of soft-winged flower beetle in the family Melyridae. The beetle was introduced to North...
Siproeta stelenes (malachite) is a Neotropical brush-footed butterfly (family Nymphalidae). The malachite has large wings that are black and brilliant...
of fuchsite may render it opaque, in which case it may be mistaken for malachite at first glance.[citation needed] The name aventurine derives from the...
Azurmalachite is a mixture of azurite and malachite. It is alternatively called azuromalachite, azurite-malachite and malachite-azurite. Azurmalachite has a distinctive...
staining method, a primary stain containing malachite green is forced into the spore by steaming the bacteria. Malachite green can be left on the slide for 15...
The Malachite Room of the Winter Palace, St Petersburg, was designed in the late 1830s by the architect Alexander Briullov for use as a formal reception...
green Malachite green dyes are related to the methyl violet dyes, except that they contain one phenyl (C6H5) group. Malachite green dyes Malachite green...
Chlorolestes apricans is a species of damselfly in the family Synlestidae. This damselfly is endemic to South Africa where it has a restricted range in...
publicist. Bazhov is best known for his collection of fairy tales The Malachite Box, based on Ural folklore and published in the Soviet Union in 1939...
secondary minerals. At the Shattuck Mine, it forms pseudomorphs after malachite. A pseudomorph is an atom by atom replacement of a crystal structure by...
Brown and Paul Marsden. It consists of a trophy with a golden crown and a malachite plinth base. The plinth weighs 33 pounds (15 kg) and the trophy weighs...
waterfalls. There are a series of waterfalls occurring on the cliff where Malachite Lake and Copper Lake's outlet streams plunge down to meet the West Fork...
Chlorolestes umbratus, the white malachite is a species of damselfly in the family Synlestidae. It is endemic to southern South Africa. This species is...
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